Overview
The BQ76PL455ATPFCTQ1, produced by Texas Instruments, is an integrated 16-cell battery monitoring and protection device. It is designed for high-reliability automotive applications, including electric and hybrid vehicles, e-bikes, electric scooters, and energy storage systems. This device acts as a communication bridge between a system controller's UART commands and the differential daisy-chain protocol used by the battery monitoring stack. It simplifies the process of communicating with the battery pack while isolating the pack controller from potentially high battery pack voltages.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | BQ76PL455ATPFCTQ1 |
| Package Type | 80-Pin TQFP (12x12) |
| Number of Cells Monitored | 6 to 16 cells |
| Communication Interface | UART, Differential Daisy-Chain |
| Power Supply | Minimum 12 V |
| Operating Voltage Range | 1.7 V to 1.9 V |
| Current Sense and Voltage Measurement | Isolated pack current and user-chosen voltage measurements |
| GPIO and AUX Inputs | Six GPIO ports, eight analog AUX analog-to-digital converter (ADC) inputs |
| Compliance | RoHS Compliant |
Key Features
- Compatible with TMS570 or C2000™ automotive-grade MCUs
- Fully-isolated pack current and user-chosen voltage measurements reported to MCU or bq76PL455A-Q1 AUX pins
- 12-V rail to power the bq76PL455A-Q1 from existing MCU power supply
- Isolated daisy-chain communication output to communicate with battery pack
- Monitors and detects fault conditions including overvoltage, undervoltage, overtemperature, and communication faults
- Secondary thermal shutdown for further protection
- Includes six GPIO ports and eight analog AUX analog-to-digital converter (ADC) inputs for additional monitoring and programmable functionality
Applications
- Electric and hybrid vehicles
- E-bikes and electric scooters
- Energy storage and UPS systems
Q & A
- What is the primary function of the BQ76PL455ATPFCTQ1?
The BQ76PL455ATPFCTQ1 acts as a communication bridge between a system controller's UART commands and the differential daisy-chain protocol used by the battery monitoring stack.
- How many cells can the BQ76PL455ATPFCTQ1 monitor?
The device can monitor 6 to 16 cells.
- What type of communication interface does the BQ76PL455ATPFCTQ1 use?
The device uses UART and differential daisy-chain communication interfaces.
- What is the minimum power supply required for the BQ76PL455ATPFCTQ1?
The minimum power supply required is 12 V.
- Does the BQ76PL455ATPFCTQ1 support isolated measurements?
Yes, it supports isolated pack current and user-chosen voltage measurements.
- What types of fault conditions can the BQ76PL455ATPFCTQ1 detect?
The device can detect overvoltage, undervoltage, overtemperature, and communication faults.
- What additional monitoring capabilities does the BQ76PL455ATPFCTQ1 offer?
The device includes six GPIO ports and eight analog AUX analog-to-digital converter (ADC) inputs for additional monitoring and programmable functionality.
- Is the BQ76PL455ATPFCTQ1 RoHS compliant?
Yes, the device is RoHS compliant.
- What are some common applications of the BQ76PL455ATPFCTQ1?
Common applications include electric and hybrid vehicles, e-bikes, electric scooters, and energy storage systems.
- How does the BQ76PL455ATPFCTQ1 protect against high battery pack voltages?
The device isolates the pack controller from potentially high battery pack voltages using isolated daisy-chain communication and power supply configurations.
